OpenSSL tries to use GNU specific extensions and fails to build with default `-std=c99`

The OpenSSL wrap fails to build with the android ndk with `error: call to undeclared function 'asm'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]` for me.

I don't quite understand how this happens since I'd think that preprocessor macros such as `# if defined(__GNUC__) && __GNUC__>=2` (`openssl-3.0.8/include/crypto/modes.h:42`) would guard against this.

Adding `c_std=gnu99` to the default options seems to work for me.

If someone wants to investigate this further and needs a minimal reproducible example let me know , I'll set it up.

Start by reproducing the Android NDK failure with the OpenSSL wrap and default c99 settings, then inspect openssl-3.0.8/include/crypto/modes.h around line 42 and the wrap's compiler options. Trace why the GNU-specific asm path is selected despite the preprocessor guard. Done means the wrap builds successfully with the default standard settings without relying on GNU-only extensions.

Written by the indexing model from the issue text.